I have a simple PyQT application which, on press of a "calculate" button calls a long-running function that performs some image processing using OpenCV. To allo
If I have class A that implements an interface (and uses Q_INTERFACES macro), then does child class B : public A also need to use the Q_INTERFACES macro? For ex
I have a collection of QVariantMaps which contains QVariantLists in SOME of their entries. I need to append to the lists. These lists can grow rather large, an
With Qt 6.2 there is a whole system of "graphics API independent" infrastructure (both on tooling and on C++ side) that enables you to render things in e.g. QML
I am working on creating zip archive using old Qt - ZipWriter class. The problem is when I want to add the directory. The default Qt code for addDirectory metho
I developed an app using QT 5.15 that need to read some kind of files in Android Download folder. All it's OK until Android 9. In Android 10 I added the manifes
I am trying to create a class with drag and drop. I want it to be used as a base class for future derived classes. I want derived classes to specify MIME data f
I have a set of functions that when they run can take a few minutes to finish. I want to display a progress bar while they are running. I have
I have a question about the use of the Intel C++ compiler on Windows for compiling Qt projects. I know that officially ICC is supported only by Qt on UNIX, but
I ask the system to call the maintenancetool and it asks for admin permission, how to know if the user allowed it or not in a .qs?
Currently using Qt. I notice many others have a lightning-quick ability to highlight a word, copy and paste it. Without using moving your hands from keyboard to
I am finding the 'Sign in' text on the QWebEnginePage and then auto filling in the emailId in the input field if the correct page is displayed. The value of ema
I'm making an application in c++ and Qt. I'd like to know if the settings below are enough to have vsync enabled automatically by Windows for qt application. ev
My program is already works well but I want to add one more condition. The program opens a directory and display .h and .cpp files. But if there is a subdirecto
I tried to build my application which uses QNetworkManager to communicate to a server. I did not have any problems on older Linux versions but with the newest U
On Qt5 project using Microsoft compiler, the qmake .pro project file have DATE = $$system(wmic os get LocalDateTime > $$OUT_PWD/wmic.txt) DATE = $$cat($$OUT_
I need to inject Open CV to Qt according to this tutorial, but at the stage mingw32-make on cmd I got en error. C:/opencv/sources/3rdparty/protobuf/src/goog
I try to build QtPDF without building the full QtWebEngine. According to the wiki page (https://wiki.qt.io/QtPDF_Build_Instructions) a simple -no-build-qtwebeng
I am creating a desktop app with Qt6 and C++ and I have my original MainWindow class. Using Qt Creator I generated ui,h,cpp for a new SummaryClass (QMainWindow)
I made this window using qt designer i did not add the code that downloads the songs yet but when I run it the window doest show up from PyQt5 import QtCore, Qt